R32 Gtr Or Gts4

[Redsuns88]

Hello there i have a 1990 GTS4

i was wondering what tyre size set up i should have since the attessa the rolling diameter needs to be the same? sorry

yes i tried the search feature but i think its not working for me

do you guys with R32 GTR and GTS4 mind sharing with me your tyre setup for track, streets and twisties please??

originally i was thinking 265 rear and 235 front?? on 18" or am i getting it all wrong??

cheers,

[GTR1993]

Yes, run the same size rim and tyre front and rear.

[blind_elk]

I'm no tyre engineer, but I find a 235/45x17 on an 8" rim seems to work well enough on my GTS4.

[Redsuns88]

im runing 18" volk racing challenger or something

but i was wondering does it have to be the same size if its a GTS4/GTR4 ? or isi the rolling diameter?

[blind_elk]

Yes, the ROLLING DIAMETER needs to be the same on ALL FOUR CORNERS. The simplest way to achieve this is to run the SAME SIZE TYRES on the SAME SIZE RIMS on all 4 corners. (Also simplifies evening out tyre wear by swapping F<->R).

I'm going to recommend switching to 17s, because you get a bit more sidewall flex available (you should note F1s run quite a tall profile tyre , especially on the rear)

[Redsuns88]

tru thanks mate,

i was thinking whats a decent size? 235 all round or ??

what are you guys running all round?

[heller44]

yet another one here with 235,45,17's on an 8" rim.

[GTS4WD]

Can I just ask?

From what I read, you already have the rims.

What size/width/offset are they?

Basically, yes.. you need the same rolling diameter all the way around.

Im running 205/45/16 on an 8 inch rim.

Stretch means less sidewall flex..

sidewall flex is VERY scary through the twisties..

Also, caster (spelling?).. try increasing caster so as the steering wheel straightens up easier during oversteer.

The rest is all up to you.. It depends how you drive. See if you over/under steer and then adjust strut/sway bars and height/damper rates according to what your experiencing, what you like and what you dont like..

It takes a while to get that sweet spot but once you got it.. gosh its awesome!

[Yawn]

You can run 235/40/18 on the fronts and 265/35/18 on the rears to get a very close rolling diameter front and rear. Thats what I use on my street rims.

Or else you can just run something like 265/35/18 all round if it'll fit your guards, and if your rim is wide enough.

[CeJay]

Will 240/45 tyres fit a 17 inch 7.5 inch wide rim?

[GTS4WD]

Will 240/45 tyres fit a 17 inch 7.5 inch wide rim?

Stand corrected..

Edited June 9, 2008 by GTS4WD

[Yawn]

Yes it will fit, but it wont be optimal

[CeJay]

So 225 or 235's the best?

[Yawn]

Just stick to 225

[CeJay]

k thx for the info. Currently running 235's was after this info for some semis or slicks. Looks like I'll be giving powerplay a call tomorrow as well.

[Yawn]

If its semi slicks in 17, 235 may work out to be cheaper as its a common size

[Redsuns88]

my rear guards been flared out so i can fit the 265/35 at the back..but i was gonna go 235 for a move linear price range on tyres an slicks.. on a 17" 8" or 9" wide?

like i can afford the 18" tyres no problem but some times its abit difficult trying to find a place that always stocks the 18" and also since i havnt flared out my front guards i dont really want to want to go to the hassle of playin with different sizes

even though Yawn your tyre set up for street sounds pretty decent.

but since 17" are fairly common i might move into that area cause later i want to move into track since i used to do it on my motorbike..

thast why im asking all these noobish questions.

but what offset would be good for a GTS or a GTR. also should i be using a 8 or 9 or even possibly a 7.5" wide rim?

cheers

[Sydneykid]

Smaller width tyres on the front is not good for handling balance in a nose heavy 4wd. Your car has over 60% of its weight on the front tyres and around 40% on the rears. That's why they understeer. Plus it does close to 80% of its braking on the front tyres. Smaller front tyres simply increase the understeer and decrease the braking potential. So why in the hell would you want to have less grip on the front than the rear?

Cheers

Gary